CLOCK GATING CIRCUIT THAT OPERATES AT HIGH SPEED

摘要

A clock gating circuit includes a first precharge unit charging a first node based on a clock signal, a second precharge unit charging a second node based on the clock signal, a first discharge unit discharging the first node based on the clock signal, a second discharge unit discharging the second node based on the clock signal, a first cross-coupled maintain unit maintaining the first node at a charge state according to a voltage level of the second node, a second cross-coupled maintain unit maintaining the second node at a charge state according to a voltage level of the first node, and a control unit controlling the first and second discharge units to discharge the first node or the second node on the basis of a clock enable signal.

主权项

1. A clock gating circuit comprising:
a first precharge unit configured to charge a first node based on a clock signal; a second precharge unit configured to charge a second node based on the clock signal; a first discharge unit configured to discharge the first node based on the clock signal; a second discharge unit configured to discharge the second node based on the clock signal; a first cross-coupled maintain unit configured to maintain the first node at a charge state according to a voltage level of the second node; a second cross-coupled maintain unit configured to maintain the second node at the charge state according to a voltage level of the first node; and a control unit configured to control the first and second discharge units to discharge the first node or the second node based on a clock enable signal, wherein the control unit is configured to control the second discharge unit so that an output clock signal having a waveform corresponding to the clock signal is output at the second node during a specific time according to the clock enable signal.